wip(ssr): initial scaffold for compiler-ssr

packages/compiler-ssr/src/index.ts

@@ -1,3 +1,63 @@
-export function hello(): string {
-  return 'TODO'
+import {
+  CodegenResult,
+  baseParse,
+  parserOptions,
+  transform,
+  generate,
+  CompilerOptions,
+  transformExpression,
+  trackVForSlotScopes,
+  trackSlotScopes
+} from '@vue/compiler-dom'
+import { ssrCodegenTransform } from './ssrCodegenTransform'
+import { ssrTransformIf } from './transforms/ssrVIf'
+import { ssrTransformFor } from './transforms/ssrVFor'
+import { ssrTransformElement } from './transforms/ssrTransformElement'
+import { ssrTransformComponent } from './transforms/ssrTransformComponent'
+import { ssrTransformSlotOutlet } from './transforms/ssrTransformSlotOutlet'
+
+export interface SSRCompilerOptions extends CompilerOptions {}
+
+export function compile(
+  template: string,
+  options: SSRCompilerOptions = {}
+): CodegenResult {
+  const ast = baseParse(template, {
+    ...parserOptions,
+    ...options
+  })
+
+  transform(ast, {
+    ...options,
+    prefixIdentifiers: true,
+    // disalbe optimizations that are unnecessary for ssr
+    cacheHandlers: false,
+    hoistStatic: false,
+    nodeTransforms: [
+      ssrTransformIf,
+      ssrTransformFor,
+      trackVForSlotScopes,
+      transformExpression,
+      ssrTransformSlotOutlet,
+      ssrTransformElement,
+      ssrTransformComponent,
+      trackSlotScopes,
+      ...(options.nodeTransforms || []) // user transforms
+    ],
+    directiveTransforms: {
+      // TODO server-side directive transforms
+      ...(options.directiveTransforms || {}) // user transforms
+    }
+  })
+
+  // traverse the template AST and convert into SSR codegen AST
+  // by replacing ast.codegenNode.
+  ssrCodegenTransform(ast)
+
+  return generate(ast, {
+    mode: 'cjs',
+    ...options,
+    ssr: true,
+    prefixIdentifiers: true
+  })
 }